Justus von Liebig Justus von Liebig, a famous German chemist, founded organic chemistry, and his most important contribution lies in agriculture and biochemistry. Therefore, it is called "the father of chemistry".
Justus von Liebig tried to burn seaweed into ashes, soak it in hot water, and then introduce chlorine into it, so that iodine in seaweed could be extracted. But he found a layer of brown liquid deposited on the bottom of the remaining residue, and when these liquids were collected, they would smell a pungent smell. He repeated the experiment and got the same result. What kind of liquid is this? Justus von Liebig thought that these liquids were obtained after chlorine gas was introduced, indicating that chlorine gas and iodine in seaweed had a chemical reaction, and iodine chloride was generated. So he put a label on the bottle containing these liquids, which said "iodine chloride". A few years later, Justus von Liebig, the window of Jinzhong, saw a paper, New Elements in Seaweed. He held his breath and read carefully. After reading it, he regretted it. It turns out that the French youth Pollard, the author of the paper, also did the same experiment as Justus von Liebig and found brown liquid. Unlike Justus von Liebig, Pollard didn't stop the experiment. He continued to study the properties of this brown liquid and the similarities and differences with the elements that had been discovered at that time. Finally, he judged that it was a new element that had not been discovered. Pollard named it "salt water". Pollard informed the Paris Academy of Sciences of his discovery, which renamed this new element "bromine".
Celebrity Story 2: Fuxi avenged his father He Lv in wuyue War at the end of the Spring and Autumn Period, making Qiang Bing a rich country. When he finally defeated Yue, he was already preparing to destroy Yue. But I gave up halfway, and later released the tiger to the mountain, seeking pleasure and not working hard. The King of Yue Gou Jian was brave after knowing shame, hard-working and indomitable. In the last 20 years, Wu perished, Fu Cha perished, and the country was ruined.
Do you know who invented the first telephone? Yes, it is the British scientist Bell.
Danbert announced the invention of the world's first telephone, which caused a sensation in the whole scientific community. Unexpectedly, just after Bell applied for the invention patent, scientist Rice filed a lawsuit against Bell in the Supreme Court of the United States, claiming that the invention right of the telephone should belong to him.
With regard to the right of invention and the reputation of the parties concerned, the court had to conduct a serious investigation and invite relevant scientists to identify the respective complaints of Bell and Rice.
The investigation and appraisal results prove that before Bell, Les did develop a sound transmission device using current, which can transmit sound to a distance of 1000 meters. But this kind of equipment can only transmit in one direction and cannot communicate with each other. In this regard, Rice confirmed that she was outspoken. So: courts and scientists have concluded that this device cannot be called a telephone.
In the face of the scientists of the court and the investigation team, Bell was also outspoken. He used rice's experiment. But he was more careful than Rice, and he found the defects of Rice's equipment. He changed the intermittent current used in the rice cooker into continuous direct current, which solved the problem of short and changeable sound. Then, in half a turn, he screwed a screw on Rice's device, which was only 5 meters, so that the sound could be transmitted to each other. Only these five meters gave birth to the telephone, which stunned Les and shocked scientists. However, this is the case.
The court finally ruled that Les lost the case, and the right to invent the telephone belonged to Bell. Bell felt that he had taken advantage of Rice's experiment and agreed that the invention patent should be owned by him and Rice. Les sighed with emotion, "I failed five meters away from success, and I will remember this lesson all my life." He resolutely refused to enjoy the patent with Bell.
We thank Bell for his patience, persistence, seriousness and hard work, and finally achieved success. Les lost a little patience, a little persistence, a little seriousness, a little effort, and finally gave up halfway and missed success. We deeply regret it. Yes, by a hair's breadth. Sometimes the distance between failure and success is only a short distance, even a millimeter. If you can't do it, you will fail. In every field of human efforts, there are some tiny gaps that distinguish winners from losers. Winners often win these tiny gaps not by genius, resources or brains, but by the depth of intention. In the journey of exploration, we will often make more efforts and take one more step, so that we can "reach the top, the other mountains all appear dwarfs under the sky." can leap to the peak of success.
& gt& gt& gt More celebrity stories that give up halfway on the next page.